HE plays mercurial Kings Cross nightclub entrepreneur John Ibrahim in the coming Underbelly series but Firass Dirani is more scared of his mum's reaction to his first small screen sex scene than how Ibrahim will react to his portrayal.

"It was full on," said Dirani, who was okayed by Ibrahim to play him.

"Getting naked in front of six people is quite bizarre. I've warned Mum; she's trying to prepare herself."

Dirani met with Ibrahim before shooting Underbelly: The Golden Mile which will air on Nine after the Winter Olympics.

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